Characterization and Performance Analysis of TiO₂ Coated UHMWPE for Biomedical Applications

Abstract:

Ultra-high Molecular Weight Polyethylene (UHMWPE) is a highly versatile polymer known for its exceptional mechanical properties, however, its limited life as an implant material for Total Joint Replacement (TJR) necessitates surface modification to extend its lifespan. This study aims to enhance the surface properties of UHMWPE through application of ceramic coatings. Magnetron sputtering method was used to deposit thin film of white Titania (TiO₂) on the material’s surface. To evaluate the surface characteristics, such as surface roughness, uniformity and structure, coated and uncoated samples were analyzed through Atomic Force Microscopy (AFM), Scanning Electron Microscopy (SEM) and X-ray Diffraction Analysis (XRD). The material performance in relation to biological context was investigated through Contact Angle measurement. A comparative analysis of coated and uncoated samples was then performed. The coated samples showed better wettability compared to uncoated sample. This fact highlights the hydrophilic nature of film. The results of the coated UHMWPE suggest that this surface modification technique could significantly extend the lifespan of UHMWPE implants in TJR, potentially addressing the current limitations associated with their longevity.

• Periodical: Key Engineering Materials (Volume 991)
• Pages: 61-66
• DOI: https://doi.org/10.4028/p-NNSWw2
• Online since: October 2024
• Authors: Muhammad Tahir*, Rizwan Mehmood Gul, Ahmad Nawaz, Muhammad Ali Kamran, Fahd Nawaz Khan
• Keywords: Magnetron Sputtering, Thin Film Deposition, TiO₂ Coating, TJR, UHMWPE

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